Marina Cool Clam Air Stone, 2.5" (6.35 cm)

This Marina Cool Clam Air Stone is the ideal accessory for added aeration, circulation and decorative highlights. Its clam-shaped pattern produces a cool bubbly visual effect to your aquarium. Simply attach airline tubing to air stone inlet and place it in the desired location. Size: 6.35 cm (2.5 in)

Other size available:

A956 Marina Cool Air Stone, Star, 8.25 cm (3.25 in),